Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Anoxic sulfide biooxidation using nitrite as electron acceptor.

Qaisar Mahmood1, Ping Zheng, Jing Cai

  • 1Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.

Journal of Hazardous Materials
|January 31, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Sludge Retention Time Governs Ectoine Synthesis and Pollutant Removal in Halophilic Activated Sludge Treating High-Salinity Wastewater.

Toxics·2026
Same author

Unit-specific fate and ecological drivers of antibiotic resistome in a full-scale swine wastewater treatment system.

Environmental pollution (Barking, Essex : 1987)·2026
Same author

Dissolved Fe(III) defines a stabilizing window for tetracycline resistance evolution under environmentally relevant conditions.

Water research·2026
Same author

Maintaining oxygen above a critical threshold prevents acetate-driven phytotoxicity in industrial-scale aerobic composting: metagenomic, MAG, and enzyme-activity evidence.

Bioresource technology·2026
Same author

Combating oxygen toxicity through antioxidants during anammox granular sludge preservation and mechanistic insights.

Bioresource technology·2026
Same author

Moderate thermal-chemical-enzymatic pretreatment for waste activated sludge: Methane yield enhancement and life cycle assessment.

Environmental research·2026
Same journal

A hybrid data-driven machine learning method for mapping trace metals in urban soils: Integrating source apportionment to enable high accuracy prediction.

Journal of hazardous materials·2026
Same journal

Microwave co-pyrolysis of oily sludge and corn stalk under different microwave absorbents.

Journal of hazardous materials·2026
Same journal

Linking vegetation types to molecular signatures of dissolved organic matter and their distinct complexation mechanisms with cadmium.

Journal of hazardous materials·2026
Same journal

From legacy to emerging polycyclic aromatic compounds: Profiling in micro-nanoplastics emissions from plastic incineration.

Journal of hazardous materials·2026
Same journal

Molecular insights into sludge-derived organics transformation during magnetic Fe<sub>3</sub>O<sub>4</sub>-catalyzed wet air oxidation.

Journal of hazardous materials·2026
Same journal

Process-based interpretation of groundwater arsenic mobility via oxidative and reductive dissolution in a complex mine-waste system.

Journal of hazardous materials·2026
See all related articles

This study demonstrates effective simultaneous removal of sulfide and nitrite from wastewater using an anoxic sulfide-oxidizing bioreactor. High removal rates were achieved at short hydraulic retention times, showcasing biotechnology

Area of Science:

  • Environmental Biotechnology
  • Wastewater Treatment
  • Bioreactor Engineering

Background:

  • Biotechnology offers solutions for environmental challenges, including wastewater pollutant transformation.
  • Sulfide and nitrite are common wastewater contaminants requiring efficient removal processes.

Purpose of the Study:

  • To investigate the simultaneous removal of sulfide and nitrite from synthetic wastewater using an anoxic sulfide-oxidizing (ASO) bioreactor.
  • To evaluate the impact of volumetric loading rates, hydraulic retention time (HRT), and substrate concentration on process performance.

Main Methods:

  • Operation of a laboratory-scale ASO reactor for 135 days.
  • Varied hydraulic retention times (HRT) and substrate concentrations.
  • Stoichiometric analyses and batch experiments to understand reaction pathways.

Related Experiment Videos

Main Results:

  • Maximal sulfide and nitrite removal rates of 13.82 and 16.311 kg/(m3 day) achieved at 0.10 day HRT.
  • High tolerance to influent sulfide (up to 1920 mg/L) and nitrite (up to 2265.25 mg/L).
  • Ammonia accumulation inhibited the process at high nitrite concentrations, necessitating careful operation.

Conclusions:

  • The ASO bioreactor demonstrates significant potential for simultaneous sulfide and nitrite removal from concentrated wastewater.
  • Optimizing HRT is more effective than increasing substrate concentration for enhanced removal rates.
  • The biotechnology is practical for treating challenging wastewaters, though ammonia build-up requires management.